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31. In 1974 congressional committees began raising questions in public about the security and usefulness of the atomic weapons.

32. The answer lies in the usefulness of the belief to the individual members.

33. It undertook feasibility studies to determine the usefulness of various techniques as applied to frescos and plasterwork.

34. By contrast, the over-hyped Times Guide to 1992 now seems to have outlived its usefulness.

35. He expressed his scepticism about the usefulness of techniques such as the envoy.

36. But everyone gave the spy plane, nicknamed the Dragon Drone, high marks for simplicity and usefulness.

37. Until then much of the usefulness of these accessories lies in their exploitation of an underused resource rather than a dramatic step forward.

38. Daniels said a number of programs that were being recommended for elimination had outlived their usefulness while others had never been successful.

39. This observation illustrates the usefulness of endosonography in the staging of low grade gastric lymphoma.

40. Voters' assessments of media usefulness varied more with their political interest, and in a complex way.

41. The Internet has a wealth of information for gardeners, but in widely varying degrees of usefulness.

42. It is worth being clear in your own mind about the possible usefulness of Blake's grid.sentencedict.com

43. Many chemicals employed in industry have little therapeutic usefulness but may produce poisoning in man when they are used.

44. These notations, or are themselves of interest, of course, but their usefulness for present purposes is vitiated by two factors.

45. It also includes discouraging cultural traits that have outlived their usefulness and may be otherwise harmful to society.

46. Make an abacus and write a report about its usefulness in terms of place value and computation.

47. The inflexible central scheduling of over-the-air broadcast transmissions severely limited the usefulness of educational television programs in individual classrooms.

48. Its usefulness overstated, its flexibility limited, it may even increase teacher workload, despite claims to the contrary.

49. The table indicates which categories each of the six companies found useful; the categories are listed in descending order of usefulness.

50. In 4.2 I gave reasons for doubting the existence or if not the existence the usefulness of infallible beliefs.

51. It is also true that many of the comments made about the usefulness of arithmetic do not address this central theme.

52. The usefulness of most Web sites is directly proportional to the benefits it offers to the people who visit it.

53. Their usefulness depends on the task you have in hand.

54. Thames Valley Police say the trials are as much to gauge public reaction to the batons as to assess their usefulness to officers.

55. Its usefulness in this disease has been questioned, and a maximum efficacy was obtained in one report at lower plasma concentrations.

56. But gradually a mutual respect, based on agreed boundaries for each other's territory and mutual usefulness, built up.

57. When we turn to human development there is even more doubt about the usefulness of the critical period concept.

58. But then at Boots we pride ourselves on our usefulness to mums.

59. This study aimed to assess the usefulness of endosonography in the surveillance of these patients.

60. We are beginning to think that this factory has outlived its usefulness as our main supplier.